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Sweep 01 Oct 2026 · 17:27Z Build v2.1.287 508 read Stable v2.1.285 Latest v2.1.287 Next v2.1.287 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.286 ·

Renamed plugin install error code and other small MCP and plugin changes

A plugin install error code is renamed, a workflow option is renamed, and a new MCP startup usage event is added

Under the hood Internal Changes
JSON All of v2.1.286
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
PluginsArea: what it touches
Internal ChangesKind: in v2.1.286,
Internal ChangesSection of the release
What

Three small internal changes:

  • the plugin install error code directory_commit_mismatch is now directory_listing_not_installable
  • a workflow option called serverAuthoredScript is now called withholdScriptFromSdkEvents
  • a new usage event, mcp_launch_named_wait, is added for MCP servers, the add-ons that give Claude extra tools
Why

These point to work in progress on MCP servers and plugins. If anything you use reads plugin install error codes, look for the new name.

How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtWhat reads these names is not known.

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